{Osprey CCM} DTC Troubleshooting Data Version: 2.0 Date: 28-Jul-17 Author: ERC Page: 9 of 244 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. B1F2B-11:- Air Conditioning Compressor Request – circuit short to Ground; Overview: ISO Code B1F2B-11 Customer Symptom No cooling Fault Effects (On Vehicle) AC will remain Off. Cooling cannot be achieved. Lamp Status (If Any) NA Fault Detection Condition Compressor permanently off Normal Operating Condition Air conditioner is functional and voltage at pin no 27 of green connector should be 12V Probable Trouble Area AC request drive line is short circuited to ground Healing Condition NA Component Details: Compressor - The compressor is the heart of an auto's air conditioning system, circulating the refrigerant that is vital to proper operation of AC. Preliminary Checks: Switch On the IGN & Engine, perform the following check. 1) Connect the Diagnostics tool & check the DTC fault code 2) Read ECU Parameter, Air Conditioning Compressor Request Output.
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